Metabolic disorder characterized by hyperglycemia (elevated serum glucose level) resulting from lack of insulin, lack of insulin effect, or both

A disorder of carbohydrate, protein, and fat metabolism

Four general classifications are recognized (see Classification of diabetes, page 54)

Patient with gestational diabetes: 50% chance of developing diabetes mellitus within 5 years

Type 1 diabetes: associated with an increased risk of congenital anomalies, hydramnios, macrosomia, gestational hypertension, spontaneous abortion, and fetal death